A laboratory aspirator, also known as a vacuum aspirator, is a device used to create suction by evacuating air or liquid from a closed system. It typically connects to water lines or uses a vacuum pump to generate negative pressure, which can then be utilised for various laboratory tasks such as filtering liquids, removing residual solvents, or assisting in the transfer of fluids. Aspirators are essential in processes requiring precise control over pressure, particularly in chemistry, biology, and medical labs. They play a key role in keeping experiments clean and contaminant-free, ensuring accuracy and safety.